#include <iostream>
using namespace std;

class Point
{
public:
    // 定义静态成员
    // static const  int top = 1;
    static constexpr int top = 1;
    int x;
    int y;
    Point(int x, int y) : x{x}, y{y} {}
};
int main()
{
    cout << Point::top << endl;
}
